3 model construction report

Construction means that the project is built as planned. Now I'm going to make a report on construction. This paper is a model construction report compiled by me for your reference only.

Model Construction Report Article 1: Project Construction Report

Leaders:

According to the design of Jiaxing Water Conservancy and Hydropower Survey and Design Institute and the design and requirements of Haiyan Water Conservancy Bureau, Qinshan Street and Vineyard Owner, this project entered the site on September 30th, 17, and was accepted on October 6th, 18/kloc-0. The total construction period was 45 days, and all the contents of the project were completed, including data collection of four valve wells. Data acquisition, water pump control and protection, valve modification of the pressurized pump house in the first station; Install automatic fertilizer adding system, transform pipelines and build greenhouses; Optical fiber laying and welding of the whole system, laying of power line, video signal line and video control line of the whole system; Simple decoration of control room of control center, installation of network cabinet, installation of operation console, configuration of software and hardware of automatic control system, etc.

I. Overview

The project is located next to the North Tuanshi Factory in Qinshan Town. There is a pressurized pump station and two 30KW pumps by the river, one for use and one for standby, with frequency conversion control and automatic manual control. The original water inlet vacuum drainage tank is equipped with two manual gate valves, which has no water shortage protection function. The vineyard * * * is about 350 mu, and * * * has 16 manual valve shaft (the depth of the well is slightly higher than the ground). All work must be manually operated by people on site. In order to meet the requirements of modern agriculture and landscaping irrigation, achieve the purpose of scientific water use, improve labor productivity, increase production and income, a set of automatic drip irrigation fertilization system is specially built. In this automatic control system, all data are transmitted to the monitoring center through optical fiber communication.

Second, the construction situation

1. Our company entered the site on September 17, and all the products under the contract arrived at the site and entered the office building of the original stone factory of Sanlian Bridge. According to the construction plan, all our personnel have been stationed in the office building and started construction.

2, the specific construction site records are as follows:

9.3 Go to the Water Conservancy Bureau for a meeting to coordinate the progress of the project.

9. 10 went to the site, communicated with Chen Gong, secretary of the village committee, and Ma Gong, town committee of the Water Resources Bureau, on the site construction, and reached an agreement on the scheme. Get all the goods ready and arrive at the site before 9. 15, and then reach an agreement with all parties before construction. During the construction period, we can live in the central control room on site to facilitate the work and supervise the equipment. Because I didn't notice the weekend when I was planning, I entered the venue on Monday, 9. 17. During this period, the company has made some relevant preparations.

9. 17 sunny afternoon 16: 30, transport all the goods to the central control room and prepare for construction. Buy a quilt at night and live on the spot.

9. 18 Consulting on valve well reconstruction, construction, valve installation and video installation scheme. Negotiate the electrical transformation of the first station, and determine the nodes for collecting data (variable signal, manual automatic signal, frequency signal, pressure signal, fault signal, output signal, etc.). , where X0 is 1 h 1 No.1 pump runs automatically, and X 1 is 1 when No.2 pump runs automatically); The gate valve is replaced by two check valves; The control center simply confirmed that the wall should be painted and the door should be replaced: the security door should be replaced, three pieces of broken glass should be filled, the operation console should be purchased, and the valve manhole cover should be installed; Buy daily necessities; Purchase engineering supplies, such as wire cutters, electric drills, sandpaper, glass glue (guns), paint, auxiliary contacts, etc. Check the installation of the fertilizer applicator.

9. 19 was fined to install the valve well by itself and buy bricks, cement, valves, pipes, etc. , coordinate with the installer, and prepare to start construction on September 20th; Install the control cabinet; Rust removal and painting of doors and windows in the central control room;

9.20 Preparation of pipeline in valve well, modification of solenoid valve and pressure transmitter; Prepare pipes, elbows, tees and other pipe fittings and transport them to the site; Complete the installation of control cabinet.

9.2 1 wiring of four control cabinets in cloudy weather; Buy SYWV75-5 video cable 600 meters, RVVP2* 1.0 signal cable 300 meters, power cable 2? 2.5 sheath line 600 meters; Buy plastic steel doors 1700? 600, 4;

9.2 1 wiring of four control cabinets installed on cloudy days is completed;

9.22 Rainwater plans to install optical fiber, valve installation and pipeline transformation; Installation failed due to rain; Control cabinet debugging; Perfect drawings; Collect and sort out product information (manuals, certificates, etc.). ); Video testing;

9.23 Fine fiber laying is completed; Complete the installation of solenoid valve in valve well and pipeline reconstruction; The valve well room will be built in the afternoon; Software testing;

9.24 Fine valve well doors and shutters are transported to the site and installed in the valve well room; Video testing; Industrial computer testing;

9.25 The check valve of Qingyi Initial Station reaches Haiyan and gets it back; Negotiate with Manager Tang about the installation of the fertilizer feeder, and initially agree to build it at the first station; Four valve wells were built to a height of 1800mm; Control cabinet channel test;

9.26 The powder walls of the four valve wells were completed in the early stage, and they were ready to be capped the next day; Make a video monitoring installation bracket at the top of the valve well and plan to fix it at the top of the valve well the next day; Collect, control and debug all kinds of data and make preparations;

9.27 Clean the manhole cover at the top of the valve. At 0/5: 30 p.m. 15: 30 p.m., the leader of the water conservancy bureau said that the valve well needed spiring, and the construction of the valve well was suspended.

9.28 Precisely measure the communication of the final field control box; In the afternoon, I went to the Water Conservancy Bureau to communicate with related matters, and the communication result was: the top of the valve well was confirmed to be flat, and the construction continued on September 29th; At the first stop, a fertilizer machine was installed, and it was not installed until the boss Zhang of the vineyard on September 29 came to the scene to confirm it. Buy a security door; Buy a computer mainframe.

9.29 Qing communicates with Boss Zhang about the installation of the fertilizer feeder; The welder installed the check valve and water flow switch at the first station, and the installation was completed.

9.30 Install a fertilizer feeder at the main outlet pipe of the first station on a sunny morning and return to Shanghai in the afternoon. Plan to return sea salt 10.4.

10.4 sunny noon 1 1 arrived in Haiyan to buy paint, etc. , began to paint the central control room at 1 pm. Purchase wiring preparation materials in the central control room.

10.5 Yin M26 and 27 valve wells to M30 and 3 1 valve wells; Central control room room coating; Contact anti-corrosion plastic wood installation;

10.6 wiring from valve wells M28 and 29 to valve wells M32 and 33 through pipelines; Four valve wells are filled with paint; Central control room floor cleaning and sweeping.

10.7 fine M30, 3 1 valve well to M32, 33 valve well for pipeline wiring; Install control cabinets for valve wells No.30, No.31,No.32 and No.33 in the first station; Install the power inlet of the control center.

10.8 Install the control cabinets of the first station, M26, 27, M28 and 29 valve wells; Pipeline perforation and sensor installation in the valve shaft chamber;

10.9 cleaning valve shaft pipe penetration and sensor installation; Complete the wiring of M26 and M27 valve wells and the installation of anti-corrosion plastic wood for external walls.

10. 10 finely completes the wiring of each station, and completes the installation of anticorrosive plastic wood on the outer wall of M30 and 3 1 valve wells;

10. 1 1 put cameras, sensors and other equipment in place for field testing; Polishing the wall of the control room, making skirting lines and brushing windows; The requirements have not been met, so it is necessary to continue working at night 12.

10. 12 essence, complete the grounding wire of each valve, fill the vacuum drainage tank of the first station with water, and prepare for commissioning; Pipes for fixing the fertilizer applicator and the fertilizer barrel; Test the machine.

10. 13 add DN250 main valve, and complete the valve; Debug the pressure, humidity and temperature signals of each valve. The whole line is debugged normally.

Third, quality control.

In the process of construction, we carry out the construction in strict accordance with the relevant specifications and basis. If you follow:

1, General Specification for Equipment Installation, Construction and Acceptance (GB5023 1-98)

2. Code for welding construction and acceptance of field equipment and pipelines

3. Code for Construction and Acceptance of Industrial Metal Pipeline Engineering (GB50235-97)

4. Code for Construction and Acceptance of Electrical Installation Engineering (GB50254-50257-96)

5. Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2002)

In order to ensure the quality of the project, the direct goal of our quality management is to pursue technical progress and scientific management, and provide customers with high-quality projects and satisfactory services. In quality management, the organization, the cultivation and strengthening of employees' quality consciousness and the application of professional technology are not only the guarantee to improve the engineering quality, but also consistent with the purpose of improving economic benefits. Therefore, ensuring the construction quality of the project is the key to the project construction organization. According to the specific conditions of this project, we have established a perfect project quality assurance system.

In the process of compiling the project construction schedule, the characteristics of many projects, wide coverage and tight construction period are fully considered, and at the same time, the connection and cooperation with the civil main body and decoration project are fully considered, and the installation process is reasonably arranged to ensure the efficient and orderly construction of the project.

Fourth, safety management.

This project strictly implements the safety management system to prevent casualties, which has been realized? Zero accidents? Construction site.

Doing a good job in safety production leadership is the key. Establish and improve the safety production management guarantee system headed by the manager. At the same time, establish and improve the safety management organization that combines line management with team management. The project manager is the first person responsible for production safety, and a safety management team is set up with 1 full-time safety officers, and the team leader is a part-time safety officer. Execute? Safety first, prevention first? Safety production policy, to ensure that accidents do not occur.

Verb (abbreviation of verb) conclusion

According to the actual situation on site, our company completed all links of the whole engineering process in just 40 days. The monitoring center has the functions of display, storage, query, control, analysis and reporting. Display specific information of each site; Real-time data acquisition includes:

◆ Collect the operating frequency of water pump and the operating pressure of pipe network.

◆ Collect the start-stop status of each water pump.

◆ Collect the fault status of each water pump.

◆ Collect the fault status of the frequency converter.

◆ Start and stop of water pump unit can be controlled remotely.

◆ Realize the pump inlet water shortage protection function.

◆ Collect fault alarm information. If the fault is comprehensive, all models that can be taken out of the original control cabinet can be uploaded.

◆ On-off state and control of valves in each station.

◆ Video omni-directional monitoring.

◆ The fertilizer adding device runs reliably.

◆ Collection and control of temperature and humidity of each plot.

The system has the characteristics of strong universality, perfect function, stable performance and reliable operation, which can provide decision-making basis for the operation and scheduling of pumping stations and realize optimal operation, thus reducing production costs and improving efficiency and management level, and has positive significance.

Shanghai Dongfang Pumps (Group) Co., Ltd.

Article 2 of the Model Construction Report: Construction Summary Report

Leadership:

Good afternoon. According to the requirements stipulated in Article 24. 1 of the ministerial document "Regulations on the Management of Technical Documents for Municipal Infrastructure Engineering Construction", on behalf of * * * * Construction Engineering Co., Ltd., I would like to report to you the construction completion of the first-phase supporting and affiliated bid II project of Chengnan Jiayuan undertaken by our unit.

I. Overview of the Project

This project is located in Friendship Industrial Zone, Songling Town, * * District, * * City, and is an outdoor supporting project for newly-built residential quarters. The contracting scope includes: residential roads, rainwater and sewage pipelines and integrated pipelines, landscape paving, street lamp installation, etc. Quality requirements: qualified. I. Design Overview

The residential area covers an area of 178262m2, and the main road is flexible pavement. It is designed according to Class III standard of urban secondary roads, with a design speed of 20km/h, a design life of 10 year and a seismic fortification intensity of 6 degrees. Outdoor rainwater and sewage are discharged into the municipal pipe networks of Nanliuhe and Binhe Road respectively. The landscape pavement mainly adopts granite plates, and the garden road mainly adopts environmentally-friendly concrete permeable bricks. Li Nan electric high-voltage cast aluminum pole lamp (courtyard lamp) and Philips energy-saving light source are selected as street lamps. According to the indoor elevation (Wusong 4.800m) of the single building, the elevation control points are designed, and the positioning control is marked with coordinates according to the design general plan. Second, the main structure form

1, subgrade and pavement:

All subgrade excavation. Pavement structure: the upper layer adopts 3csump- 13 (refer to 3.5%SBS) asphalt concrete pavement; The lower layer adopts 5cm coarse-grained AC-20C asphalt concrete; The base is 30cm4% cement stabilized macadam, the subgrade is 70cm ballast, and the kerbs are C30 concrete precast slab stones and Wulianhua granite kerbs.

2. Drain pipe:

Outdoor rainwater and sewage pipes are all made of high-density polyethylene (HDPE) double-wall wound drainage pipes, which are connected by elastic flared sealing joints, and the ring stiffness is not less than 8KN/m2. The design adopts sand cushion foundation, and the medium and coarse sand is backfilled to the top of the pipe 15cm. The manhole is made of round bricks. The rainwater outlet adopts the general B-type single grid rainwater outlet in Jiangsu Province.

Second, the project completion

First, the construction period

This project started on April, 2065438 13, and all the projects in this contract were completed on February, 20 13. Second, the project completion (completion of major quantities):

65,438+0. Large earthwork: subgrade excavation is 33,000m3, paving slag is 23,000m3, trench excavation is 23,000m3, trench filling is1.3m3, and the rest is abandoned;

2. Road: 23,000m2 of 4% cement stabilized macadam base, 5+3 asphalt concrete surface course18,000m2, paving kerbs14,000m;

3. Drainage and comprehensive pipelines: rain and sewage pipelines10.6 million meters, weak current comprehensive pipelines of 2.4 kilometers and more than 2,300 inspection wells have been completed;

4. Landscape engineering: 3000㎡ granite pavement, 600㎡ washed Shiyuan Road, 650㎡ pavement with water-permeable bricks for environmental protection, 29 flower tree ponds of various shapes, and 0/5 sets of leisure seats/kloc;

5. Installation works: 4 15 sets of pole lights (SFT 6067), 100 sets of lawn lights (SFT 4089), 65 sets of floodlights (SFT4089) 100) and12.7km sheathed cables.

Third, the quality control situation

1, quality management

In order to facilitate the quality control in the construction process, according to the relevant technical standards and specifications and combined with the actual situation of this project, this project is divided into sub-projects and inspection lots, and submitted to the supervision unit for approval.

According to the bidding documents and contracts, this project is divided into four divisions: roads, drainage and integrated pipelines, landscape paving and street lamp installation.

Among them, for the road section, * * * completed 9 disciplines and 37 inspection lots; Drainage and integrated pipeline * * * completed 45 inspection lots in 5 specialties; Landscape part * * * completed 4 majors, with 3 inspection lots for each major; The installation part * * * completed 9 specialties, with 2 inspection lots for each specialty. * * * 4 divisions, 27 specialties and 588 inspection lots.

All divisions and subdivisional works of the inspection lot have passed the acceptance test, and the engineering quality meets the requirements of design and acceptance specifications. They are qualified and meet the acceptance requirements.

2, detection and evaluation

26 batches of 22 varieties of main raw materials and components were re-examined, all of which passed the one-time inspection. The superior competent department randomly selected 8 varieties for 3 times, and all of them passed the test.

Compressive strength test of concrete block 145 group (including 12 group curing under the same conditions), and 12 copies of summary evaluation report are all qualified; The compressive strength of 56 groups of cement mortar test blocks was tested, and 5 evaluation reports were summarized, all of which were qualified.

The water-stabilized base course and asphalt concrete surface course are tested by sections and layers according to the testing frequency (points) required by the specification, and all the routine projects are qualified. The deflection detection results of the top surface of water-stabilized layer and asphalt pavement meet the design requirements, and the anti-sliding test results of asphalt pavement meet the design requirements.

Fourth, engineering changes

The main changes are:

1. Cancel the original design of 30cm 12% lime-soil subgrade for road engineering, and fill the road with the same thickness for slag removal instead; The storage ramp and parking space were originally designed as grass-planted brick pavement, and changed to C25 carved concrete pavement.

2. The rainwater and sewage wells in the original design road of the drainage project are moved to the green belt in a unified way, and rainwater and sewage inspection wells are added; The outlet of the main sewage pipe was originally designed on the east side of Building No.28, but later changed to the east side of Building No.49, adding 80m pipes, 4 inspection wells and 1 grid wells.

Five, problems encountered in the construction process and treatment methods

1. There are many unfavorable factors during the implementation of this project, such as rainy weather, high temperature weather and strong typhoon. In the process of laying rainwater and sewage pipes and digging and filling subgrade in the early stage, it is in the rainy season, which affects the construction progress. Therefore, under the guidance of * manager, the project department vigorously implements the construction guarantee measures in rainy season, organizes uninterrupted pumping and drainage of personnel and equipment, takes advantage of rainy days, increases investment in manpower, machinery and materials, and works overtime to win back the lost time. At the same time, strict quality control is carried out on key processes, especially the backfilling sand of pipeline foundation and the tamping of ballast subgrade, which will be carried out by full-time quality inspectors in each well section or road section one by one to ensure the construction quality reaches the qualified standard.

In the medium-term construction of road water-stabilized base and installation of kerbs, we encountered a rare continuous high temperature weather, with the extreme temperature as high as 42℃, which not only brought serious difficulties to outdoor open-air construction, but also greatly increased the risk of production safety accidents. In order to prevent the occurrence of safety accidents, the project department organized all staff to study the spirit of the document Notice on Further Strengthening Construction Safety in Hot Weather issued by the Municipal and District Construction Bureaus, to improve their ideological understanding, strengthen self-examination and self-correction, improve prevention and control measures, strictly observe the duty system, and make steady progress in safety, which not only ensured the health and safety of construction personnel, but also ensured the construction progress and project quality.

In the later landscape paving process, it was affected by strong typhoon. Fett? Impact, three days of heavy rainfall in this area, the backward Nanliu River, serious water accumulation and power failure in the construction area. Therefore, the project department transferred 1 75kw diesel generator and 1 1/5kw diesel generator and 3 3kw gasoline generators from the company to carry out emergency pumping and drainage with self-provided power supply, so as to resume normal construction in the shortest time.

2, water-stabilized base crack treatment:

After the expiration of the road water-stabilized base construction and maintenance, it was found that after the geotextile was removed and cleaned, there were many cracks on the base surface, mainly distributed in the south of 5 1#~52# building, 3#~4# building, 42# building and 40# building. The maximum crack is about 3 mm, because the crack distribution position has obvious regularity, that is, it is basically parallel to the external gable axis of the new building or the design settlement joint, and the crack width is 0.5 ~ 3 mm Through research, it can be basically determined that cracks appear in the water-stabilized base due to the differential settlement of the new multi-storey single building.

In order to ensure the engineering quality and avoid the influence of crack reflection on asphalt pavement, according to the technical guidance of * * * * * *, our department decided to take the following treatment measures:

(1), clean and wash the road surface, especially the cracks after cleaning, and blow off the dust with a hard brush;

(2) After the cracks are dried, the emulsified asphalt with low consistency is poured into the cracks, and the pouring depth is not less than 2/3 of the crack depth to prevent rainwater from entering the cracks;

(3) Glass fiber geogrid is laid and anchored in the upper part of the crack section (and marked at both ends of the crack), and the breaking strength of glass fiber is not less than 80KN. Because glass fiber grating has high tensile strength and low elongation, it has the function of load stress distribution and diffusion, which can effectively delay the upward reflection of cracks and inhibit the further expansion of cracks.

(4) After paving the asphalt pavement (coarse grain), lay a layer of glass fiber grating at the original crack position according to the mark, and lay 60cm along the crack as the center to both sides, and fix it with steel nails to prevent the reflection of the crack, so as to ensure that the asphalt pavement is not affected, thus ensuring the quality of pavement construction.

In the process of organization and implementation, the project will be carefully constructed and strictly controlled, and the treatment scheme and image data of the treatment process will be reported to the district quality supervision station for review. The construction of asphalt pavement has been completed for three months. During this period, heavy vehicles for greening construction came in and out every day, and nothing unusual was found.

Six, engineering safety, environmental protection and civilized construction

There is no fire accident, death accident and serious injury accident during the construction of this project. The goal of civilized construction was basically achieved, and no environmental violations occurred, ensuring the harmony and unity of production activities and ecological environment.

Seven. Problems and suggestions left over from the project

1, main problems

As a supporting accessory project of residential area, this project will inevitably cause damage, scratches and pollution to various inspection wells, kerbs, asphalt pavement and other parts due to ongoing greening and leveling, farming, planting and maintenance. Please ask the construction unit to organize and coordinate the cooperation between contractors and construction teams to strengthen the protection of finished products. If it is damaged, it should be repaired in time or notified to our unit for handling.

2. Experiences and lessons of project management.

This project, as a supporting accessory project of a new residential area, only involves four parts: roads, rain and pollution, landscape and street lamps. Others, such as electricity, communication, intelligence, gas, water supply, fire protection, greening, etc., are all contracted by the owners in parallel and are not subordinate to each other. In the process of construction, the project department of each bid section lacks overall coordination and overall consideration for the management of each region, and has not formed the management core, unified understanding and overall cooperation. Because there are many specialties, unit projects and overlapping operations in the whole bid section, there is no core management department to control the whole project, and the functions of planning, coordination and control are not realized, which leads to chaos and internal friction, which seriously affects the realization of the overall construction period.

3, engineering warranty

Our department promises to provide quality warranty service in accordance with the relevant provisions of the contract within the warranty period required by the contract. From the date of acceptance and delivery of the project, the warranty work of our department will be started immediately, and a warranty team mainly composed of the main construction personnel of this project will be set up to deal with related problems in time. The letter of guarantee was signed as an annex to the contract.

Eight. conclusion

Under the supervision and management of the construction unit Wujiang Songling Urban-Rural Integration Construction Investment Co., Ltd. and the supervision unit Jiangsu Senxin Project Management Co., Ltd., and with the joint efforts of all the project builders, this project has successfully completed all the projects agreed in the contract of the second bid section of the supporting subsidiary project of Chengnan Jiayuan Phase I. By reviewing the whole construction process, summing up experience and drawing lessons, the construction management level is gradually improved. Next, we will work harder and be more confident, and make new contributions to the construction of Taihu New Town and the municipal engineering of Wujiang District!

During the construction of this project, the leaders of district quality supervision station, safety supervision station, quality department of Taihu New Town Construction Bureau and Songling City Investment Company visited the site for inspection and guidance many times. Thank you! !

* * * * Construction Engineering Co., Ltd.

Chengnan Jiayuan Supporting Subsidiary Project Ⅱ Bid Section Projects Department

Project Manager * * *

20xx year x month x day

Article 3 of the Model Construction Report: Construction Report

I. Overview of the Project

This project belongs to the second-class office building, with a construction area of 1570. 1㎡, a seismic fortification of 8 degrees, a design service life of 50 years, a structural safety grade of II, a fire protection grade of II, and a main building height of 13.2m, with three floors. (equivalent to four floors, with tiger windows on the roof structure floor)

Second, the progress of the project

1, preparation work

On March 7th, after the technical disclosure of my project, we made preliminary preparations from March 8th to March 10, worked out the construction organization design, organized the operators of various types of work, made a detailed inspection of the surrounding materials, and determined the commercial concrete suppliers and testing units. At the same time, contact the hydropower unit to complete the power supply and water supply work, and the preliminary construction procedures, including commencement report, safety agreement and construction contract, shall be handled by the company; It is not in place yet;

2, site layout work

March 1 1 officially entered the site for construction. From March 1 1 to June 15, the enclosure shall be set according to the actual situation, and the enclosure height shall be 1.8m, and it shall be fully enclosed. During this period, due to the limitation of the construction site, the station garage was occupied, and after asking for instructions, it was temporarily built for the station. In addition, considering the shortage of earthwork stacking space, after consultation with the station, it is agreed to extend back 2 meters on the original plan to meet the construction requirements.

3, equipment, personnel investment

Up to now, there are 37 people, including 2 plumbers; 2 electricians; 8 carpenters; 10 steel workers; Concrete workers 12 people; There are 3 bricklayers and 9 sets of various mechanical equipment.

4, the construction situation

(1) Trenching operation project

After the pay-off from March 16 to March 20th, the trench with a depth of 1.5m will be excavated and moved under the supervision of the equipment unit. It ensures the good operation of the equipment and the smooth progress of the project.

(2) Demolition works

Demolition of the original waiting room of 25m *15.5m. During this period, due to manual demolition, the operation safety hazard is extremely great, and scaffolding and safety protection nets need to be erected for demolition. In addition, in the process of demolishing the underground building of the original waiting room, manual demolition is difficult and the progress of the project is slow, so we adopted mechanical demolition in time;

(3) Foundation trench excavation

From March 20th to March 27th, the foundation trench was excavated by setting out. On the premise of ensuring safety, we adopted mechanical trench excavation, and at the same time, after drilling, we successfully passed the trench inspection organized by the design department on the 29th.

(4) Shutdown stage

Due to the insufficient setting position of the foundation angle, the design department needs to make design changes after the on-site inspection on the 29th, so it can't be constructed and is in a state of waiting for work, so it can't achieve the expected goal of the construction period.

(5) Return to the working stage

Foundation construction resumed on April 13. In this process, it was found that the original excavation was backfill soil and clay, which was not enough to make Sanqi lime soil, and the newly bought earthwork could not be bought locally. After contacting with Gong Lin, the design department, the foundation treatment was carried out in the ratio of white ash: stone chips: fine sand of 3:4:3 instead of Sanqi lime soil, and the standard drop test was made.

(6) Foundation engineering

On April 15, gravel grading foundation treatment construction will be carried out. Combined with the characteristics of tight construction period, large amount of ash mixed and high quality requirements, the project department goes all out, strictly organizes and scientifically constructs. To complete more than 300 gravel grading and compaction tasks, it is necessary to rationally adjust and arrange key working procedures, implement seamless flow construction, and ensure that the construction tasks are completed on schedule.

* * * * * * * Project Department